Gemini 4

1957–1969: Opening the Space Age

Gemini 4

Crewed research mission; first U.S. spacewalk.

Era 1 of 6 · full record in the catalog

Launch
3 Jun 1965
Lead / partner
United States
Target
Earth orbit
Category
Human spaceflight / science
Status
Success
Vehicle
unknown
Mass
unknown
Orbit / trajectory
Geocentric
Duration
4 days, 1 hour, 56 minutes, 12 seconds

Why it happened

Gemini 4 flew during 1957–1969: Opening the Space Age, as part of United States's work toward earth orbit. A sourced write-up of the context around this mission is still on the editorial queue; nothing here is invented to fill the gap.

The mission

The full narrative of this mission is pending research and writing. What is recorded so far: Crewed research mission; first U.S. spacewalk.

Results

Crewed research mission; first U.S. spacewalk.

Related missions

Gemini 4 Voskhod 2 — same_target Voskhod 2 OGO 1 — same_target OGO 1 Syncom 2 — same_target Syncom 2 Ariel 1 — same_target Ariel 1

OGO 1

Success

United States · 1964

Ariel 1

Success

United Kingdom / United States · 1962

Sources & image credits

  • Image credit: NASA · license: public-domain (source, checked 2026-08-22)
  • Mission record: AntarikshPedia canonical dataset (data-sources/missions_timeline.md)
  • Specifications reference: NASA NSSDCA Master Catalog